Name one common method used to apply pesticides in aquatic environments.

Surface spray applications are a common method used to apply pesticides in aquatic environments because they allow for targeted treatment on the water surface, where many aquatic pests are most active. This method is effective for controlling surface-dwelling organisms and can ensure that the pesticide is evenly distributed across the water body.

Using surface sprays can minimize disturbance to the water column and provide immediate coverage while allowing for easier monitoring of the application. This method is particularly useful when addressing infestations of insects or algae that thrive at or near the water's surface.

Other methods, while they may have specific applications, are not used as frequently as surface spraying due to factors such as difficulty in application, potential application inefficiencies, or limited effectiveness against specific pests.